Something I instantly wanted to agree with the second I read it:
“Having good ideas is most of writing well. If you know what you’re talking about, you can say it in the plainest words and you’ll be perceived as having a good style. With speaking it’s the opposite: having good ideas is an alarmingly small component of being a good speaker.”
More on Writing and Speaking @ paulgraham.com. I haven’t visited his site in a long time, glad to see he’s still writing.